Тип публикации: статья из журнала

Год издания: 1999

Идентификатор DOI: 10.1134/1.558991

Аннотация: We propose a t-J-I model with direct ferromagnetic exchange I to explain the superconductivity of copper oxides and the ruthenate Sr2RuO4 on the basis of the analysis of the electronic structure of these substances. We analyze the possible p- and d-type superconducting solutions. Solutions of the s type with singlet pairings are imПоказать полностьюpossible in the strong-electron-correlations regime, and p-type solutions correspond to triplet superconductivity and is formed near the ferromagnetic instability threshold in ruthenates. The solution with the d(x)(2)-y(2) symmetry near the antiferromagnetic instability threshold corresponds to copper oxides. We also discuss the reason for the high values of the superconducting transition temperature (T(c)similar to 100 K) in copper oxides and the low values (T(c)similar to 1 K) in ruthenates. (C) 1999 American Institute of Physics. [S1063- 7761(99)02208-8].

Журнал: JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS

Выпуск журнала: Vol. 89, Is. 2

Номера страниц: 349-357

ISSN журнала: 10637761

Место издания: WOODBURY

Издатель: AMER INST PHYSICS

• Kuz'min E.V. (Krasnoyarsk State University)
• Ovchinnikov S.G. (L. V. Kirenskii Institute of Physics,Siberian Branch of the Russian Academy of Sciences)
• Baklanov I.O. (L. V. Kirenskii Institute of Physics,Siberian Branch of the Russian Academy of Sciences)

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